This book is an adaptation of a work Ideer Zu Einer Mimik (1795) by Johann Jakob Engel, German philosopher and dramatist. The illustrations were familiar to Charles Darwin from his research for the book The expression of the emotions in man and animals (1872), via Moreau’s edited edition of Lavater which used many of these images (see Charles Darwin and Victorian Visual Culture by Jonathan Smith, 2009). To my eyes they seem a little stiff – some work better than others.